Register a Parachain

Follow along the docs here: https://docs.substrate.io/tutorials/build-application-logic/use-macros-in-a-custom-pallet/

Specifically you will need to:

1. Setup a relay chain - https://docs.substrate.io/tutorials/build-a-parachain/prepare-a-local-relay-chain/
2. Connect a parachain - https://docs.substrate.io/tutorials/build-a-parachain/connect-a-local-parachain/

The remainder are extra fun.